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A. H. FOX AND A. W. LENDEHOTH.

CONTROLLING DEVICE.

APPLICATION men AUGJO. 191a.

Patented Dec. 2, 1919.

3 SHEETS-SHEET I min m:

A. H. FOX AND A. W. LENDEROTH.

CONTROLLING DEVICE.

I APPLICATION FILED AUGJO, I918- 1,323,261. Patented Dec. 2, 1919.

3 SHEETS-SHEET 2.

A. H. FOX AND A. W. LENDEROTH.

'comnoumc DEVICE.

APPLICATION FILED AUGJO. I918.

Patnted Dec. 2,1919.

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13323-261; L1*xsi caweeseei1 .i tiN Tt York, county "ah'dj State of l\'ew 'Yoi'kfitii d Stapleton, co'linty of embeds-amin s. of New Yoik, hive intefited f c'e iteiih and new miii'dve tsii i o ins fi f fll c h jio i e inn;- elemand e x ajct desciilitihn. 1 In a systeih fotji'eiltiey 'sfldff f other analogoils p' iifposes and nowjset forth in nu iierons imteilti Ve niployfe traclghthzitfd go t ll: Gems-nae in Eouiffifbf k s'uls'pended frof the hi'cle in close p1 oxlihity to ia and which coin i'ises fis its J see gfie't with LS IXYOVQ able'coie which is held in a eei'tainhositi'ofn; by the atti'a'cti've effect themes 51f of magnetic iron 'oi stee1', b if1t which in a break in the magnetic "continuity of etch rail is shifted to 2t:se'condjposition} by; the then p'repondeiant atmmtiteefiee of e' 'fikd' magnetic body n 'ithin theea singh Our present invention is not difectlyzcomcerned with the nature of the use of device 1101 in general with the chem e1 of the system of which foi msfatpaiit,lo i1t' er thins to the construction of the devidelitsel'fi and consists in in'iprove'inen'ts thereon; the purpose and nature" of which tvill hammer-v stood from thefollowing'p efatory consider ationh i Q These devices are designed to be hiou'ght into opeizition by breaks of predeteiinined lengths in the magnetic continuity of the and rails of a trhck, such breaks. being usually 40 produced by the ,insertion of sections of manganese steel, which is nondntgnetic, but we have found in practice that the'ordinew tracks, including frogs, switches, tuifnt'ehle's; and the like, 2ti' e likely to contain magnetic breaks which, While not notice'iibly extensive under ordinary conditions of use, are n vertheless sufiicient .to operate the controllingdevice when no., such operation of the seine is intended or desired. This has rendered it neees'sary for us to devise a devicewhieh will not' be influenced by such' casu'ztl inter ruptions ofthe magnetic circuit, but w11l onlyyield to such as are designedly made of ,5 pomiitoiilme specificetlon tf Letters leteiit.

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:v dh the, Edi-m of device which we have pm diced, tomeet .the taboye reqnireinents We. have introduced other features ;of novelty which contribute to its practical success, and these will be described noie in detail hereinaftei'. 1

the acconipiihying dimtihgszv Fign're'l is a Vieti inelevationo f 010i: inis proved device,-

pei'tfof the inclosing easing being broken "to exhibit theinteiior mechanism. I 'h t I Fig. 2 a ldngitiidinal section of the casing showing the intiioi pin-ts mainly in elevation. I isflwa ci s sectional vieit' Ion line of End the rail ov ei Whichit. tfijfels. j i. k ;Fig, i 1st section on line f Fig. 2, sliowiiig device controlled by the moi able indfiiietic core. U hoi izo nta'l sectioh on the line Fi '6 is a View in section on line 6- 6 of Fig. 2, and

Fig. 7 is a diagiiun showing cii'cuit c011- nection's; v

The operative mechanism is contained in :t has 01' casing-1 of the pro'p'e'i Shape and dimensions above described, which is designed to be siippoi-ted from a rigid pz'u-t such the equalizer 2 of a car truck immedia't-ely back of 'a cinwheel. For practical reasons the ends of the casing hat-e inclined lower corners, as shown; and for like reasons the casing is supported by arms 3 pivoted to Jim's 4 and resting against stops 5,;s0 that when st'mck by any object the casing may yield find tilt to it 'slighte'xtent. The material at the casing; is non magnetie metal, and its' 'hbottoin'jis designed to run ever the rail with jafslhitll but sufficient clearai'iee for all practical purposes. 7

Within the casing is mounted a horizontal magnetic core 6 (see Fig. 2), having two coils 7 T thei eon whichwhen supplied with cil ffen't pfo'duefe ohsequeffit, if 'ztghetic pole at the center and two opposite :oolesfat the endsof the 'coieJfThl, ce fit ra'lfco'ffs'equent "pole [is extended By the Vei tica co 'e' portion 8 to the'hottonfof the ageing where the 'sai'd we is eitefided ,anjeljohgetd po1e9. V

In close proximity to the ends of the S113 ti'on'i ry core 6 are two r'nfoveble coies1'0, L0,;

normally in the plane ofthe p these are adapted to turn freely about'the central axiatt-lineiofithe'fcorefi. oiFor this' purpose spindles 11 are mounted in anti friction bearings 1n non-magnetichous ngs set in the ends of the casing l,-and"-are-'*- secured to tut cores 1!), so that these latter ere fi e cores are in close proximit core 6 they prolong thei such core and cons-trite a movable portion ot sueh circuitj The two cores are rigidly connected by a cross bar or beain 13'secured' to them and halanced injthis in'stenceby' the to the ends of "i tendency ceases .to terra extent, Whereupon the movable cores are swung up. into line with a magnetic body 1 fixed in the casing; which bodythen exerts a greater attractive eflect, owing to its "niass and posi 'tion, upon the movable cores than the fixed pole 9, althongh such attraction is never greater than that exerted by a rail of ma,- netic iron or steel.

The above is the general construction ot the device, but'it' is designed With special reference to certain conditions which render its specific'details of greater importance. For example, in devices of this class for- 4o n'i'erly used, acomparatively hort and casual break in the magneticwontinuity of the rail would bring about an unintended operation of the device, but this instrument isnot subject to such objections as it 'Willnot be at fected by any break, however extended, provided it be not beyond the liinits'permissible under ordinary railroad practice. I

For this purpose the foot or pole piece 9 is made of a greater length than the longest 5o permissible break so that sufficient attracl tije force w ll. lalivays be exerted on one' side at least ota break to prevent the movable core from 1-ising in obedience to; the

preponderating attraction oi": the fixed magnetic body 1 I 'The structure shown, moreover, has other usefulpropertieswhich are not readily explainablef It Willibe noted, for example,

thatlforits proper operation it is necessary 30 that the normal line of travel of the ends of that the pii otal points therefore shall he severahinches above and to one'sideot the on 1 3 9191 he e I s ee i elflr re u tha o swing, or turn, and as the said"- the niovable 'cores'seel'to ollow in,

* "thefniovable parts of the magnetic core should be directly over the top of a rail, and I n a section of non-ina neticia1loccurs Whi'c'his not designed to operate the device but used rfoi othe'f -"structural' purposes' 1t would bring about an undesired operation of the device. In such cases, for purpose of oilfsysteni, it has been usual heretofore to attach to the side of the red an iron or steel :baIQLsWhlChEWOUld act in place ofithe'crail itself to preserye the proper position of the "con-trbl'ling' 'eor'es'o'1""magnets. 7 5

It is particularly desirable in such gases that this bar .She ia belbeibn'furftep" f the r'aiL hfi "tvf'ha've' found thatw "'T above'ides e ser ice-seer bar is, not adee q ie ie e r'o sia it i m i-l me 8, cores will ris gjri 5 assin 'over' it, and as;

or' soft sidQdflth I m t by. a rilf gf h si es-ref; Wlnch are jsecured'jto' aidg" T st iiirf si aq d t; it i' length 10f bar and are designed] to impar t to I 0th "rs agnetis'nrofthefsaine sign-, but-j opposltet that of the novableQcores so:

Q- T is t e13. t fQ h i t nd cy the cores to noye; u'pwa d vhen passing over a-sectionot non inagnetiorail. 'QI: esi 'ablejthgtf the nioveblecores should be I'free to l-swing beyond the per-10o pendicular in the 'direct-ionof their; down, Ward travel, and'for thisi'pu'rpo'se fixedfstops have heretofore been employed to limit their movement Butit; has beenfound that owing to the shocks and jars to" which the de-Q1Q5 vices are; constantly jsubjected "such ineens, are not adeqiiate, and that the cores are liable to jrufipor Trebound beyond the proper liiiults. Q To avoid tliis'andthe inea nsadopted 'for thepurpose has been found ,to bedl lO most ,etfective, "eattacha fiexiblestrap to a'statioi ary partj'of the device and carry; it over' the. rotating, part ofthe moyable core and latt'achi'it to the, latten, This is, shoivni'nfF ig, 6, iniu'fhieh 1 8 is a steel tape .115 secured' atone, end to'thej housin l 2. and at the [other to any part of the spin 1e 11 after passing iov'erpits ftop. the use lot this expedient.theniove nentlof the core may be limited'ljiii either or bothdirections, as may be desid, 'asii's inanifest fronrthe'fimctionf tothesingle apeshown 1 To indi ate thenat root the M (levi'ce ,,\lve have shown 1 Eigs- 4 circuit con teller QOe ei'atedbyQthe, ableieeresl'l The details ofv be ,very v great. iii regimen, 'u henthe ipov l able H ores v a in,normal or reihattracted t position" the; conducting" portion l of the circuit "controller engages with a contactlilsq answer tric lamp 522, Should i I contact broken and the lianp. 'eacnignishnjl.

It is obvious that circuits may be o ened or closed prior to either i the limits of motion of cores l'ti.

Tlid dtailsfdi. tlie ctinstriiction of this device may obviously be greatly varied in many particulars, but what we claim is:

1. In a device of the kind herein set forth, the combination of a casing having a horizontal portion with a dependent portion at one end which portion is not wider than a car wheel, means for supporting the casing from a car truck immediately behind a car wheel, a fixed magnetic core and movable magnetic core contained in the casing, the movable cores extending through the dependent portion with their ends adapted to swing into close proximity to the rail.

2. In a device of the kind herein set forth, the combination with a casing adapted to be suspended from a mov ng vehicle in close proximity to the rail, of a-fixed or stationary magnetic core, coils thereon that produce a consequent magnetic pole at its center, a downward extension of such consequent pole, two movable polesswinging about the central axis of the stationary core and a magnetic body which in the absence of a magnetic rail beneath the device attracts and raises the movable cores.

3. In a device of the'kind described the combination with a casing adapted to be suspended from a moving vehicle in close proximity to a rail, of a magnetic system therein comprising a horizontal magnetic core with a central prolongation toward the rail provided with an elongated pole piece, coils which produce a consequent magnetic pole at the center of the core, and movable cores pivoted in the line of the axis of the horizontal core so that their ends may swing into line with the central pole piece, and a magnetic body within the casing which, in the absence of a magnetic rail under the device, attracts and raises the movable cores.

4. In a device of the kind described, the combination with a casing adapted to be suspended from a moving vehicle in close proximity to a rail, of a magnetic controlling device therein comprising a magnetic core having a fixed and a swinging portion, of a tension band encircling more or less the shaft of the swing portion, having one end secured to the casing and the other to said shaft for limiting the movement of the same in one direction.

In a device of the kind described, the combination with a casing adapted to be suspended from a moving vehicle in close proximity to a rail of a magnetic controlling device therein comprising a fixed centr'al pole'and two swinging poles 'ofopposite polarity to the central -pole, and adapted :to'

be' he'ld in line. with the" central pole while pafssing -o'v'eia magnetic rail, and means for raising the unov'able poles when" the attrarctivc-eftect of a railcea'ses'n" 3. nna 5 device of the-" kirfd described, the combination with a casing adapted to be suspended from a moving vehicle in proximity to a rail, of a controlling device within the casing comprising a central fixed pole and two swinging movable poles adapted to be held in line with the central pole by the attractive effect of a rail, the central pole being of such length that short or casual breaks in the magnetic continuity of the rail will not afi'ect the magnetic attraction for the swinging poles.

'7. In a device of the kind described, comprising a horizontal core with two coils which produce a consequent pole at its center, and a depending central part of said core having an extended pole piece, of swinging cores pivoted in bearings mounted at the ends of the fixed core, and a magnetic body mounted to one side of the normal position of the swinging cores for the purpose set forth.

8. The device herein described, comprising a horizontal fixed core with a right angled extension from its center having an elongated pole piece, coils which produce a consequent pole in said pole piece, spindles in bearings supported at the ends of the fixed cores, swinging cores secured to said spindles and cooperating with the central stationary pole, and means for attracting and raising said movable cores when not attracted by a rail over be passing.

9. The means herein described, for limiting the movement of swinging cores, comprising spindles mounted in bearings at the ends of the fixed core and carrying movable cores, tension bands secured at one end to a fixed support and carried around the spindles and secured at the other end thereto.

10. The magnetic system for controlling devices herein shown and described, comprising a horizontal core, a central depending core with an elongated pole piece, coils which produce in said pole piece a consequent magnetic pole, movable cores pivoted at the ends of the horizontal core and adapted to swing about the central axis of the same, and a magnetic body of greater mass than the pole piece, fixed in position to attract and raise the ends of the movable poles when other and stronger attractive influences thereon are not present.

11. In a system of the kind described, in combination, a controlling device supported from a moving vehicle in close proximity to a rail, and comprising opposite magnetic which the device may poles attracted toward each other by the tendency of the magnetic lines to bridge the gap between said poles through a magnetic rail, and arailhaving casual breaks in its magnetic continuity, one of the said opposite magnetic poles being of such length as to bridge the casual breaks and thus insure the operation of the device notwithstanding the occurrence of such breaks.

tures.-

In testimony whereof weaflix our signa- 1.0 

